Shop 7.0 Inch Scissors at Japan Scissors. Long and Lightweight blades that fit comfortably in your hands. The longest blade at Japan Scissors - often used by professional barbers.
It doesn't matter if you are a barber or a hairdresser, the 7" inch scissors can be used by everyone.
Different size scissors can lead to different styles.
Placing the tip of the 7" scissor's blade on the top of your middle finger and the handle onto your palm, you should see it fit nicely.
The 7" typical have finger holes that are between 2cm to 3cm. For smaller thinner fingers, finger inserts fill I'm the remaining space.
The majority of barbers use the 7" size shears for their cutting styles.